A forward and reverse wire drawing equipment for steel coil for bolt production

Abstract

The application discloses a steel coil forward and reverse wire drawing equipment for bolt production, which comprises a base plate, a first stand and a second stand, and the first stand and the second stand are fixedly installed on the top surface of the base plate. The application has the advantages that the forward coarse drawing and the reverse fine drawing are adopted, one driving motor is used to complete the forward coarse drawing and the reverse fine drawing process, one driving motor is used to complete the synchronous unwinding work while the wire drawing is carried out, the support plate props up the steel coil from the inner side of the steel coil, and the material is stably discharged along with the rotation of the center pipe frame, so that the stability and the working efficiency of the wire drawing process are improved. When the steel coil wire passes through the inside of the lubricating box, the air blower is started to blow the wire drawing powder, so that the wire drawing powder is stirred in the lubricating box and collides with the surface of the steel coil wire, so that the wire drawing powder is uniformly adhered to the surface of the wire, the lubrication is more uniform, the lubrication efficiency is improved, the structure is simple, the wire drawing powder can be well lubricated even if the height of the wire drawing powder is lower than the height of the wire, and good lubrication stability is achieved.

Description

Technical Field

[0001] This invention relates to the field of bolt manufacturing technology, and more specifically, to a forward and reverse wire drawing device for bolt production using steel coils. Background Technology

[0002] Bolts are a type of fastener consisting of a head and a shank. They are used to fasten two parts with through holes. Bolts are anchoring components that anchor the connected parts to a hardened concrete substrate. Before cold heading, bolts require steel coils to be drawn to the designed diameter, and most of them are cold-drawn.

[0003] The wire drawing process generally involves two steps: initial drawing and fine drawing, gradually reducing the wire diameter. A search revealed CN104289537B, entitled "A Double Wire Drawing Device," which uses a two-stage drawing method (forward and reverse) to gradually reduce the diameter of the rebar, ensuring good strength. However, the wire drawing structure in this application is not linked to the uncoiling equipment, causing the uncoiling process to rely entirely on the movement of the wire, making the wire prone to twisting and resulting in an unstable and unreliable uncoiling process. Furthermore, traditional wire drawing powder boxes are prone to cavities, leading to poor lubrication and affecting continuous wire drawing efficiency. A search also revealed CN210497708U, entitled "A Wire Drawing Lubrication Box for Bolt Production," which proposes applying lubricant during drawing to reduce drawing force and die wear. A lubrication box is installed in front of the wire drawing die to allow the sticky lubricant to enter the die. Because the drawing powder has a certain particle size, it is quickly consumed around the welding wire during use, and the surrounding powder cannot be replenished, forming a cavity around the wire. This prevents the drawing powder from entering the drawing die in a timely and sufficient manner with the welding wire, resulting in severe friction between the wire and the die, affecting the surface finish of the wire, and easily causing wear on the drawing die. Further improvements can be made. At the same time, the application with publication number CN210497708U also has the problem that when the height of the remaining drawing powder is lower than the height of the wire, the spiral blade conveyor will also have a cavity problem. Furthermore, when the content of the drawing powder decreases further, it is even more difficult to gather, resulting in the drawing powder not being able to adhere evenly to the surface of the wire. It also has the problem of poor continuity and stability in use, which can also be further improved.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a forward and reverse wire drawing device for steel coils used in bolt production. This device offers advantages such as improved wire drawing efficiency and stability, wide applicability, and enhanced lubrication efficiency, thereby solving the problems mentioned in the background technology.

[0007] (II) Technical Solution

[0008] To achieve the aforementioned advantages of improved wire drawing efficiency and stability, wide applicability, and improved lubrication efficiency, the specific technical solution adopted by this invention is as follows:

[0009] A steel coil forward and reverse wire drawing device for bolt production includes a base plate, a first upright, and a second upright. The first and second uprights are fixedly mounted on the top surface of the base plate. A central tube frame is rotatably connected through the surface of the first upright, and a support plate is provided on the outer side of the central tube frame. A driven gear is fixedly connected to the other end of the central tube frame. A drive motor is fixedly mounted on one side of the second upright above the base plate via a motor mount. A reducer is mounted on one side of the drive motor, and the drive motor is connected to a main shaft through the reducer. A drawing roller is fixedly connected to the other end of the main shaft through the second upright. The outer surface of the drawing roller has a spiral groove, and a drive gear is fixedly connected to the other end of the drawing roller. The drive gear and the driven gear... The wheels are meshed. On one side of the central tube frame, from left to right, a first guide wheel, a lubrication box, a first wire drawing die, and a second guide wheel are installed sequentially on the top surface of the base plate. On the other side of the drawing roller, from left to right, a fifth guide wheel, a second wire drawing die, a lubrication box, and a fourth guide wheel are installed sequentially on the top surface of the base plate. A third guide wheel is installed between the fourth guide wheel and the second guide wheel on the top surface of the base plate. An air inlet is provided on the bottom surface of the lubrication box, and an air supply pipe is connected to the bottom surface of the air inlet through a split pipe. A vertical pipe is connected to the surface of the air supply pipe. The bottom surface of the vertical pipe is fixedly connected to the base plate through a fixing plate, and a blower is fixedly installed on the top surface of the fixing plate on one side of the vertical pipe. The air inlet of the blower is connected to the vertical pipe.

[0010] Furthermore, the central tube frame is rotatably connected to a positive and negative threaded rod via a rotating connecting seat. The other end of the positive and negative threaded rod passes through one end of the central tube frame and is fixedly connected to a handwheel. Both the positive and negative threads on the outer surfaces of the positive and negative threaded rods are threaded with sleeves. A connecting plate is welded to the outer wall of the sleeve, and a second hinge seat is fixedly installed at the other end of the connecting plate. A first hinge seat is fixedly installed on the inner surface of the support plate. An inclined rod is provided between the support plate and the central tube frame, and the two ends of the inclined rod are hinged to the first hinge seat and the second hinge seat, respectively. A through groove is opened on the surface of the central tube frame for the connecting plate to move.

[0011] Furthermore, multiple support plates are arranged at equal angles along the main axis of the central tube frame, and the length of the support plate is greater than the length of the through groove.

[0012] Furthermore, the central tube frame is rotatably connected to the first upright frame via bearings, and the main shaft is rotatably connected to the second upright frame via bearings.

[0013] Furthermore, the first guide wheel, the second guide wheel, the third guide wheel, the fourth guide wheel and the fifth guide wheel have the same structure, and a column is inserted through and rotated at the central axis of the first guide wheel, and the bottom surface of the column is fixedly connected to the base plate through the mounting plate.

[0014] Furthermore, the first guide wheel is rotatably connected to the column via a bearing, and limit plates are fixedly sleeved above and below the outer surface of the column.

[0015] Furthermore, a rubber cylinder is embedded at the center of one end of the lubrication box, and an outlet is provided at the center of the other end of the lubrication box.

[0016] Furthermore, an air ring is fixedly installed on the outer surface of the outlet at the other end of the lubrication box, and an air outlet groove is opened obliquely on the inner wall of the air ring towards the outlet. The air outlet groove is annular, and the air ring is connected to one end of the air supply pipe through an air inlet pipe.

[0017] Furthermore, a feed pipe is connected through the top surface of one end of the lubrication box, and a top cover is threaded onto the top surface of the feed pipe.

[0018] Furthermore, a dust filter is embedded in the top surface of the upper cover.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, the present invention provides a steel coil forward and reverse wire drawing device for bolt production, which has the following beneficial effects:

[0021] (1) This invention employs forward coarse drawing and reverse fine drawing, using a single drive motor to complete both processes. Furthermore, the U-shaped wire drawing path of the steel coil is achieved through a first guide wheel, a second guide wheel, a third guide wheel, a fourth guide wheel, and a fifth guide wheel, avoiding the problems of excessively long equipment layout and large space occupation caused by continuous straight wire drawing. Simultaneously, during the wire drawing process, the steel coil is sleeved onto the outside of the support plate, and the forming end of the steel coil is wound into the spiral groove on the outer surface of the drawing roller. The drive motor drives the drawing roller to rotate for wire drawing. The rotation of the drawing roller drives the drive gear to rotate, and the drive gear, through meshing with the driven gear, drives the central tube frame to rotate and unwind. A single drive motor completes the synchronous unwinding work while drawing the wire. The support plate supports the steel coil from the inside, and the material is stably unwound as the central tube frame rotates, thereby improving the stability and efficiency of the wire drawing process.

[0022] (2) The present invention adopts an adjustable support plate. The operator can rotate the handwheel to drive the positive and negative threaded rods to rotate, thereby driving the sleeve to move closer or further away at the same time. The support plate is retracted and opened by the diagonal rod, which can be used to adapt to steel coils with different coil diameters, thus improving the scope of application and the convenience of use.

[0023] (3) The present invention uses a lubrication box containing wire drawing powder. When the steel coil wire passes through the lubrication box, the blower is started, and the air force is generated and enters the air supply pipe through the vertical pipe. It is then injected into the air inlet through the diverter pipe, blowing the wire drawing powder and causing it to tumble in the lubrication box and collide with the surface of the steel coil wire. This makes the wire drawing powder evenly adhere to the surface of the wire, resulting in more uniform lubrication and improved lubrication efficiency. Moreover, the structure is simple, and even if the height of the wire drawing powder is lower than the height of the wire, it can still lubricate well, achieving good lubrication stability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a steel coil forward and reverse wire drawing device for bolt production according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the installation of the drawing roller and the support plate according to an embodiment of the present invention;

[0027] Figure 3 This is a front view of the first and second uprights according to an embodiment of the present invention;

[0028] Figure 4 This is a front view of the first guide wheel according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the lubrication tank according to an embodiment of the present invention;

[0030] Figure 6 This is an enlarged view of node A of the lubrication tank according to an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the first guide wheel according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the external structure of the lubrication tank according to an embodiment of the present invention;

[0033] Figure 9This is an enlarged view of node B of the lubrication tank according to an embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the external structure of the air ring according to an embodiment of the present invention.

[0035] In the picture:

[0036] 1. Base plate; 2. First upright; 3. Second upright; 4. Motor base; 5. Drive motor; 6. Reducer; 7. Drawing roller; 8. Driven gear; 9. Central tube frame; 10. Diagonal bar; 11. Support plate; 12. Handwheel; 13. First guide wheel; 14. Lubrication box; 15. First wire drawing die; 16. Second guide wheel; 17. Third guide wheel; 18. Fourth guide wheel; 19. Second wire drawing die; 20. Fifth guide wheel; 21. Drive gear; 22. Main shaft ; 23. First hinge seat; 24. Connecting plate; 25. Second hinge seat; 26. Sleeve; 27. Positive and negative threaded rod; 28. Rotary connecting seat; 29. ​​Limiting plate; 30. Column; 31. Mounting plate; 32. Rubber cylinder; 33. Feed pipe; 34. Top cover; 35. Air ring; 36. Fixing plate; 37. Blower; 38. Vertical pipe; 39. Air supply pipe; 40. Diverter pipe; 41. Air inlet; 42. Air inlet pipe; 43. Outlet; 44. Air outlet groove; 45. Dust collector filter. Detailed Implementation

[0037] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0038] According to an embodiment of the present invention, a forward and reverse wire drawing device for steel coils used in bolt production is provided.

[0039] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-10As shown, a steel coil forward and reverse wire drawing device for bolt production according to an embodiment of the present invention includes a base plate 1, a first upright 2, and a second upright 3. The first upright 2 and the second upright 3 are fixedly installed on the top surface of the base plate 1, and a central tube frame 9 is rotatably connected through the surface of the first upright 2. The portion of the central tube frame 9 extending beyond the first support is hollow, and a support plate 11 is provided on the outer side of the central tube frame 9. A driven gear 8 is fixedly connected to the other end of the central tube frame 9, and the driven gear 8 is located between the first upright 2 and the second upright 3. A drive motor 5 is fixedly installed on one side of the second upright 3 above the base plate 1 via a motor base 4, and a reducer 6 is installed on one side of the drive motor 5. The drive motor 5 is connected to a main shaft 22 through the reducer 6, and the other end of the main shaft 22 passes through the first upright 1. The second support frame 3 is fixedly connected to a drawing roller 7, which is a common drive structure. The outer surface of the drawing roller 7 has a spiral groove to facilitate drawing and reduce slippage during wire drawing. The other end of the drawing roller 7 is fixedly connected to a drive gear 21, which meshes with a driven gear 8. The diameter of the drive gear 21 is smaller than that of the driven gear 8. On one side of the central tube frame 9, located on the top surface of the base plate 1, from left to right, are installed a first guide wheel 13, a lubrication box 14, a first wire drawing die 15, and a second guide wheel 16. On one side of the drawing roller 7, located on the top surface of the base plate 1, from left to right, are installed a fifth guide wheel 20, a second wire drawing die 19, a lubrication box 14, and a fourth guide wheel 18. A third guide wheel 17 is installed between the fourth guide wheel 18 and the second guide wheel 16 on the top surface of the base plate 1. The lubrication box 14 has an air inlet 41 on its bottom surface, and an air supply pipe 39 is connected to the bottom surface of the air inlet 41 through a diverter pipe 40. Multiple air inlets 41 are evenly distributed. The lubrication box 14 has a cylindrical structure, and a vertical pipe 38 is connected to the surface of the air supply pipe 39. The vertical pipe 38 serves as a support and air supply pipe. The bottom surface of the vertical pipe 38 is fixedly connected to the base plate 1 through a fixing plate 36, and a blower 37 is fixedly installed on the top surface of the fixing plate 36 on one side of the vertical pipe 38. The air inlet of the blower 37 is connected to the vertical pipe 38. During the wire drawing process, the steel coil is sleeved on the outside of the support plate 11, and the forming end of the steel coil is wound in the spiral groove on the outer surface of the drawing roller 7. The drive motor 5 drives the drawing roller 7 to rotate to draw the wire. The rotation of the drawing roller 7 drives the drive gear. The drive gear 21 rotates, and the driven gear 8 meshes with the central tube frame 9 to rotate and unwind the coil. A drive motor 5 completes the synchronous unwinding work while drawing the wire. The support plate 11 supports the steel coil from the inside. As the central tube frame 9 rotates, the material is unwound stably, thereby improving the stability and efficiency of the wire drawing process. At the same time, the lubrication box 14 contains wire drawing powder. When the steel coil wire passes through the lubrication box 14, the blower 37 starts, generating airflow that enters the air supply pipe 39 through the vertical pipe 38, and is injected into the air inlet 41 through the diverter pipe 40, blowing the wire drawing powder and causing it to tumble in the lubrication box 14, colliding with the surface of the steel coil wire. This allows the wire drawing powder to adhere evenly to the surface of the wire, resulting in more uniform lubrication and improved lubrication efficiency.Furthermore, its simple structure allows for effective lubrication even when the height of the drawing powder is lower than the wire height, resulting in excellent lubrication stability.

[0040] In one embodiment, a positive and negative threaded rod 27 is rotatably connected inside the central tube frame 9 via a rotary connecting seat 28. The other end of the positive and negative threaded rod 27 passes through one end of the central tube frame 9 and is fixedly connected to a handwheel 12. The positive and negative threaded rod 27 is rotatably connected to the other end of the central tube frame 9 via a bearing. A sleeve 26 is threaded onto the outer surface of both the positive and negative threads of the positive and negative threaded rod 27. A connecting plate 24 is welded to the outer wall of the sleeve 26, and a second hinge seat 25 is fixedly installed at the other end of the connecting plate 24. A first hinge seat 23 is fixedly installed on the inner surface of the support plate 11, and a diagonal rod 10 is provided between the support plate 11 and the central tube frame 9. The diagonal braces 10 are arranged in a crisscross pattern, and the two ends of the diagonal braces 10 are respectively hinged to the first hinge seat 23 and the second hinge seat 25. The surface of the central tube frame 9 is provided with a through groove for the connecting plate 24 to move. Multiple support plates 11 are arranged at equal angles along the main axis 22 of the central tube frame 9 to provide multiple support points. The length of the support plate 11 is greater than the length of the through groove. The operator can rotate the handwheel 12 to drive the positive and negative threaded rods 27 to rotate, thereby driving the sleeve 26 to move closer or further away at the same time. The diagonal braces 10 drive the support plate 11 to retract and open, which can be used for steel coils with different coil diameters, improving the applicability and ease of use.

[0041] In one embodiment, the central tube frame 9 is rotatably connected to the first upright 2 via a bearing, and the main shaft 22 is rotatably connected to the second upright 3 via a bearing, thereby improving the smoothness of rotation.

[0042] In one embodiment, the first guide wheel 13, the second guide wheel 16, the third guide wheel 17, the fourth guide wheel 18, and the fifth guide wheel 20 have the same structure. A column 30 is rotatably inserted through the central axis of the first guide wheel 13, and the bottom surface of the column 30 is fixedly connected to the base plate 1 through the mounting plate 31. The first guide wheel 13 is rotatably connected to the column 30 through a bearing, and a limit plate 29 is fixedly sleeved above and below the first guide wheel 13 on the outer surface of the column 30 to prevent the first guide wheel 13 from moving up and down. The wire wraps around the first guide wheel 13, the second guide wheel 16, the third guide wheel 17, the fourth guide wheel 18, and the fifth guide wheel 20 at least one revolution.

[0043] In one embodiment, a rubber cylinder 32 is embedded at the center of one end of the lubrication box 14, and an outlet 43 is opened at the center of the other end of the lubrication box 14. A wire passes through the rubber cylinder 32 and is press-fitted with the rubber cylinder 32 to prevent air leakage.

[0044] In one embodiment, an air ring 35 is fixedly installed on the outer surface of the other end of the lubrication box 14 on the outside of the outlet 43. The inner wall of the air ring 35 is provided with an air outlet groove 44 at an angle to the outlet 43. The air outlet groove 44 is annular. The air ring 35 is connected to one end of the air supply pipe 39 through the air inlet pipe 42. Part of the airflow generated by the blower 37 enters the air ring 35 through the air inlet pipe 42 and enters the interior of the outlet 43 through the air outlet groove 44, forming an airflow that enters the interior of the lubrication box 14, thus preventing the wire drawing powder from leaking.

[0045] In one embodiment, a feed pipe 33 is connected to the top surface of one end of the lubrication box 14, and a top cover 34 is threaded onto the top surface of the feed pipe 33. A dust filter screen 45 is embedded in the top surface of the top cover 34. When adding wire drawing powder, the top cover 34 can be opened and the powder can be added through the feed pipe 33. During normal use, the top cover 34 is tightened, and the dust filter screen 45 can easily intercept and filter the wire drawing powder while venting.

[0046] Working principle:

[0047] During the wire drawing process, the steel coil is attached to the outside of the support plate 11, and the forming end of the steel coil is wound into the spiral groove on the outer surface of the drawing roller 7. The drive motor 5 drives the drawing roller 7 to rotate for wire drawing. The rotation of the drawing roller 7 drives the drive gear 21 to rotate. The drive gear 21 meshes with the driven gear 8, driving the central tube frame 9 to rotate and unwind. A single drive motor 5 completes the synchronous unwinding work while drawing wire. The support plate 11 supports the steel coil from the inside, and the material is stably unwound as the central tube frame 9 rotates, thereby improving the stability and efficiency of the wire drawing process. At the same time, the lubrication box 14 contains wire drawing powder. When the steel coil passes through the lubrication box 14, the blower 37 starts to generate airflow. The powder enters through the vertical pipe 38 into the air supply pipe 39, and then through the diverter pipe 40 into the air inlet 41. This agitates the drawing powder, causing it to tumble in the lubrication box 14 and collide with the surface of the steel coil wire. This ensures that the powder adheres evenly to the wire surface, resulting in more uniform lubrication and improved lubrication efficiency. The structure is simple, and even if the height of the powder is lower than the height of the wire, it can still provide good lubrication stability. At the same time, the operator can rotate the handwheel 12 to rotate the forward and reverse threaded rods 27, which in turn moves the sleeve 26 closer or further away. The inclined rod 10 drives the support plate 11 to retract and open, adapting to steel coils of different diameters and improving the applicability and ease of use.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel coil forward and reverse wire drawing device for bolt production, characterized in that, The system includes a base plate (1), a first upright (2), and a second upright (3). The first upright (2) and the second upright (3) are fixedly mounted on the top surface of the base plate (1). A central tube frame (9) is rotatably connected through the surface of the first upright (2). A support plate (11) is provided on the outside of the central tube frame (9). A driven gear (8) is fixedly connected to the other end of the central tube frame (9). A drive motor (5) is fixedly mounted on one side of the second upright (3) above the base plate (1) via a motor mount (4). And a reducer (6) is installed on one side of the drive motor (5), and the drive motor (5) is connected to a main shaft (22) through the reducer (6). The other end of the main shaft (22) passes through the second stand (3) and is fixedly connected to a drawing roller (7). The outer surface of the drawing roller (7) is provided with a spiral groove, and the other end of the drawing roller (7) is fixedly connected to a drive gear (21). The drive gear (21) meshes with the driven gear (8). The diameter of the drive gear (21) is smaller than the diameter of the driven gear (8). On one side of the central tube frame (9), from left to right, on the top surface of the base plate (1), a first guide wheel (13), a first lubrication box, a first wire drawing die (15), and a second guide wheel (16) are installed sequentially. On one side of the drawing roller (7), from left to right, on the top surface of the base plate (1), a fifth guide wheel (20), a second wire drawing die (19), a second lubrication box, and a fourth guide wheel (18) are installed sequentially. Between the fourth guide wheel (18) and the second guide wheel (16), on the top surface of the base plate (1), a first guide wheel (13), a first lubrication box, and a second guide wheel (16) are installed. The three guide wheels (17) have an air inlet (41) on the bottom surface of the lubrication box, and the bottom surface of the air inlet (41) is connected to the air supply pipe (39) through the diversion pipe (40), and the surface of the air supply pipe (39) is connected to the vertical pipe (38). The bottom surface of the vertical pipe (38) is fixedly connected to the base plate (1) through the fixing plate (36), and the top surface of the fixing plate (36) is fixedly installed on one side of the vertical pipe (38) with a blower (37), and the air inlet end of the blower (37) is connected to the vertical pipe (38). During the wire drawing process, the steel coil is sleeved on the outside of the support plate (11), and the forming end of the steel coil is wound in the spiral groove on the outer surface of the drawing roller (7). The drive motor (5) drives the drawing roller (7) to rotate to draw the wire. The rotation of the drawing roller (7) drives the drive gear (21) to rotate. The drive gear (21) drives the central tube frame (9) to rotate and unwind through the meshing driven gear (8). One drive motor (5) is used to complete the synchronous unwinding work at the same time as wire drawing. A rubber cylinder (32) is embedded in the center of one end of the lubrication box, and an outlet (43) is opened at the center of the other end of the lubrication box; An air ring (35) is fixedly installed on the outer surface of the outlet (43) at the other end of the lubrication box. The inner wall of the air ring (35) is obliquely opened to the outlet (43) with an air outlet groove (44) and the air outlet groove (44) is annular. The air ring (35) is connected to one end of the air supply pipe (39) through the air inlet pipe (42). Part of the airflow generated by the blower (37) enters the air ring (35) through the air inlet pipe (42), and enters the outlet (43) through the air outlet groove (44), forming an airflow that enters the lubrication box.

2. The bolt production steel coil forward and reverse wire drawing equipment according to claim 1, characterized in that, The central tube frame (9) is rotatably connected to a positive and negative threaded rod (27) via a rotating connecting seat (28). The other end of the positive and negative threaded rod (27) passes through one end of the central tube frame (9) and is fixedly connected to a handwheel (12). The positive and negative threaded rod (27) has a sleeve (26) threaded onto its outer surface. A connecting plate (24) is welded to the outer wall of the sleeve (26). A second hinge seat (25) is fixedly installed at the other end of the connecting plate (24). A first hinge seat (23) is fixedly installed on the inner surface of the support plate (11). An inclined rod (10) is provided between the support plate (11) and the central tube frame (9). The two ends of the inclined rod (10) are respectively hinged to the first hinge seat (23) and the second hinge seat (25). A through groove is provided on the surface of the central tube frame (9) for the connecting plate (24) to move.

3. The bolt production steel coil forward and reverse wire drawing equipment according to claim 2, characterized in that, Multiple support plates (11) are arranged at equal angles along the main axis of the central tube frame (9), and the length of the support plate (11) is greater than the length of the through groove.

4. The bolt production steel coil forward and reverse wire drawing equipment according to claim 1, characterized in that, The central tube frame (9) is rotatably connected to the first upright frame (2) via bearings, and the main shaft (22) is rotatably connected to the second upright frame (3) via bearings.

5. The bolt production steel coil forward and reverse wire drawing equipment according to claim 1, characterized in that, The first guide wheel (13), the second guide wheel (16), the third guide wheel (17), the fourth guide wheel (18) and the fifth guide wheel (20) have the same structure, and a column (30) is inserted through the central axis of the first guide wheel (13) and rotated, and the bottom surface of the column (30) is fixedly connected to the base plate (1) through the mounting plate (31).

6. The bolt production steel coil forward and reverse wire drawing equipment according to claim 5, characterized in that, The first guide wheel (13) is rotatably connected to the column (30) via a bearing, and the first guide wheel (13) is fixedly sleeved with a limit plate (29) on the outer surface of the column (30) above and below.

7. The bolt production steel coil forward and reverse wire drawing equipment according to claim 1, characterized in that, The top surface of one end of the lubrication box is connected to a feed pipe (33), and the top surface of the feed pipe (33) is threaded with a top cover (34).

8. The bolt production steel coil forward and reverse wire drawing equipment according to claim 7, characterized in that, A dust filter (45) is embedded in the top surface of the upper cover (34).

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